DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root
Published Oct 12, 2026 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
DOMPurify before 3.4.16 contains a cross-site scripting vulnerability that allows attackers to bypass sanitization because IN_PLACE mode returns a force-removed style element whose text content still carries markup. Attackers can supply a style element containing a closing style tag and an img onerror payload, which executes script when the application serializes and re-parses the returned node.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- Security advisory ↗
- VulnCheck Advisory: DOMPurify before 3.4.16 XSS via IN_PLACE Returned Rawtext Root ↗
Record history
Published Oct 12, 2026 · Last refreshed Nov 3, 2026